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  High efficiency dedusting equipment for steelmaking the source and characteristics of the harmful substances in the steelmaking workshop of electric furnace, the determination of various ways and quantities of flue gas for dedusting of electric furnace, the design and calculation of various high temperature flue gas coolers, the determination of dedusting scheme, the control and detection of dedusting system, etc. in addition, the design selection and performance requirements of dedusting equipment are introduced.